Gary (Super Paper Mario)
Gary is a rather ordinary Goomba and a member of Bowser's legion of minions, the Koopa Troop.
In Super Paper Mario, Gary and an unnamed companion of his, also a Goomba, are among the minions of Bowser to be transported to his wedding to Princess Peach and later, Count Bleck's castle.
After wandering around aimlessly in Count Bleck's castle, Castle Bleck, Gary and his Goomba companion find an unconscious Luigi, whom they, after complimenting him and telling him how great he is, use as a bodyguard. After traveling with Luigi for some time and whispering snide remarks about him under their breath, Gary and his Goomba friend come upon a dead-end in Count Bleck's castle.
Before either Luigi, Gary, or the other Goomba can turn back though, Gary is zapped by Nastasia's hypnotic powers and transformed into a mindless servant of Count Bleck. Gary is last seen attacking Luigi along with his Goomba companion, who, at the sight of Gary being brainwashed, willingly joined Count Bleck's side because he says it is the winning side.
Presumably, he is one of the Goombas encountered in Castle Bleck (though more than once, two Goombas are seen together). Depending on whether the player chooses to fight him, he might or might not be killed during this time.